Brick block



FIG. 1 is a front, left perspective view of my new ornamental design for a brick block;

FIG. 2 is a back, right perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front side elevational view thereof, the back side elevational view being a mirror image thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a brick block, as shown and described. 